jOOλ
jOOλ - The Missing Parts in Java 8 jOOλ improves the JDK libraries in areas where the Expert Group's focus was elsewhere. It adds tuple support, function support, and a lot of additional functionality around sequential Streams. The JDK 8's main efforts (default methods, lambdas, and the Stream API) were focused around maintaining backwards compatibility and implementing a functional API for parallelism. (by jOOQ)
Functional Java
Backport of Java 8's lambda expressions to Java 7, 6 and 5 (by luontola)
jOOλ | Functional Java | |
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2 | 1 | |
2,057 | 3,539 | |
0.0% | - | |
1.7 | 0.0 | |
10 months ago | 7 months ago | |
Java | Java | |
Apache License 2.0 | Apache License 2.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
jOOλ
Posts with mentions or reviews of jOOλ.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-01-27.
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To use Java Collections or another collections library? (Eclipse, Guava, Apache)
Jool has tuples and lots of extra niceties for working with streams, and I thing it has smaller surface than vavr. You have a method zipWithIndex than allows you to do
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Exceptions and Streams
Introducing the Unchecked.function() from the jool library that does EXACTLY what we did above. Using it, the final code looks like:
Functional Java
Posts with mentions or reviews of Functional Java.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-02-11.
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What can I do with Java 1.4?
I made one (Before realizing it'd already been done) to backport newer language features to Java 8 and it was pretty easy to bundle it up as a maven plugin. But going back all the way to 4 will be a notable increase in difficulty. Retrolambda goes to 1.5 but not all the way to 4. You could hypothetically add a layer on top of it to support 1.5 -> 1.4. That or roll a fork of it.
What are some alternatives?
When comparing jOOλ and Functional Java you can also consider the following projects:
StreamEx - Enhancing Java Stream API
Javaslang - vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.
Fugue
derive4j - Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, folds, optics and typeclasses.
cyclops-react - An advanced, but easy to use, platform for writing functional applications in Java 8.
λ - Functional patterns for Java
underscore-java - java port of Underscore.js